Process of treating and utilizing sullage from molten metals.



W. H. CARPENTER. I BBOGESS 0F TREATING AND UTILIZING SULLAGE PROM MOLTEN METALS.

APPLIOATIOR FILED NOV. 19, 190a.

91 3,874. Patented Mar. 2 1909.

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'Treatin g and UNITED STATIELS PATENT OFFICE.

WILLIAM H. CARPENTER, OF BRISTOL, COhNECTICUT, ASSIGNOR OF ONE-HALF TO A. L. HAASIS, OF BROOKLYN, NEW YORK.

PROCESS OF TREATING AND UTILIZING SULLAGE FROM MOLTEN METALS.

Specification of Letters Patent.

Patented March 2, 1909.

Application filed November 19, 1908 Serial No. 463,487.

To alt/(chem it may concern:

Be it known that I, IYILLIA I-I. CARPEN- TEE, a citizen of the United States, residing at Bristol, in the county of Hartford and State of Connecticut, have invented a new and useful Im rovement in the Process of tilizing Sullage from Molten Metals, of which the following is a specification.

This invention relates to the process of treating and utilizing the sullage that is skimmed from molten metals and has for its object to render the process expeditious and to save labor and material.

"Ordinarily the sullage that is skimmed from molten metal is deposited in a pile where it is allowed to remain until the comstick it together making it necessary to crush the mass in order to separate the metal from the dirt. In thus crushing the sullage the metal is also crushed more or less thereby making it iiner and more likely to be lost in washing. Instead of thus depositing the skimmed sullage when hot, in a pile, 1 skim thehot sullage directly into a tank of water, thereby immediately extinguishing the fire in the charcoal or other combustible, material, and separating the metal from the dirt by suddenly cooling the metal. This has a tendency to deposit the metal-in pieces of a compact form, more or less globular, instead of thefilamentous' form that the metal has when it is allowed to run and spread out for a time before cooling.

In the accompanying drawing, I have shown an operator in the act of skimming a crucible of molten metal into water in accordance with my process. The tank 2 is filled with Water nearly to the top, and is preferably sunk in the ground floor of the foundry so that a considerable body of water may be used and at the same time the top of the tank may be at a convenient height for skimming the sullage from the crucible 3 directly into the water in the tank. The

, tank may be provided with a cover 4 s0 arcrushing operation unnecessary.

ranged as to leave an opening 5 for the sullage to pass through as the operator pokes it with the skimmer 6 from the crucible into the tank of water. After thus depositing the sullage in the water tank, the floating ieces of charcoal may be skimmed oil and alowed to drain, after which the charcoal may be used for flux in the ordinary manner. the bottom of the tank is removed therefrom, then washed and screened to separate the dirt from the metal. This washing and screening is done without crushing the mass, the sudden cooling in water rendering the Some of the finer particles of charcoal or other combustible material will cling to the metal but it is not necessary to remove them as the metal thus extracted from the sullage may be placed in the crucible for remelting and any particles of charcoal therein will serve as flux, and thus be beneficial instead of harmful. The metal saved from the sullage can be used in a short time after the crucible is skimmed, thereby preventing the accumulation of large quantities of waste or scrap metal. The sullage, by my process, is gotten out of the way at once, and there is-no inconvenience to the workman due to a hot pile on the foundry floor as there is by the old process. My process effects a saving in time and labor, a saving in charcoal, and a saving in metal.

What I claim as my invention and desire to secure by Letters Patent, is

1. In a process of treating and utilizing sullage from crucibles containing molten metal, the process of treating the sullage consistlhg of skimming it from the crucible and depositing it when hot therefrom directly into a body of water for cooling and separation.

2. The herein described process of treating and utilizing sullage that floats on molten metal in crucibles, consisting ofskimming it from the crucible when hot therefrom and depositing it when hot therefrom directly into a body or water for cooling and separation, then washing and screening t-lic sedi ment to extract the metal, together with such combustible material as may be mixed theremetal, consisting of depositing the sullege j such combustible material as may be mixed When hot from the crucible directly into a therewith.

body of Water for cooling and separation, ,1 T -1 then removing the combustible materialthat WILLIAM CARPENTER 5 maybe floating on the Water, and then re- Witnesses: nioving the sediment for Washing and screen- I D. WILSON, mg to extract, for reheating, the metal and i 'H. R. 000K. 

